S 216-009
(4)
Make sure the portable oxygen cylinders are correctly installed to the wall-mounted brackets or storage compartments, where applicable.
S 216-010
(5)
Make sure the portable oxygen cylinders are in satisfactory condition:
(a)
Make sure the portable oxygen cylinders are clean.
(b)
Make sure the portable oxygen cylinders are not damaged.
TASK 35-31-00-206-013
4. Protective Breathing Equipment (PBE) Check (Fig. 601)
__________________________________________
A. References
(1)
AMM 35-00-00/201, Oxygen
(2)
IPC 35-31-00
B. Access
(1) Location Zone
274 Area Above Ceiling, Right
C. Procedure
NOTE: The PBE has a tamper seal which does not have to be removed to
____
do this check.
S 916-019
(1) Read and obey the safety precautions and general instructions for the oxygen system before you do the maintenance (AMM 35-00-00/201).
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A
747-400
MAINTENANCE MANUAL
S 216-015
(2) Make sure the PBE is in its correct position and the pouch is not inflated.
NOTE: The foil pouch can be seen through the window on the
____
stowage box door. The foil pouch must look tightly
compressed, and a recess in the foil pouch will be
immediately in back of the oronasal mask cone.
(a) Replace the PBE if the foil pouch does not have a vacuum and is inflated.
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